Constellation Energy

Nuclear power, grid reliability, data center power

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The brief

Analyst view
  • Constellation operates 55 GW of generating capacity from nuclear, natural gas, and renewables.
  • Recent partnerships include Google (890 MW new nuclear capacity) and Amazon (190 MW expansion at Calvert Cliffs).
  • The company operates the largest fleet of nuclear power plants in the United States and supplies data centers seeking 24/7 clean power.

Technical approach

As reported
Fleet

Diverse generation mix

Constellation operates nuclear, natural gas, oil, geothermal, hydro, wind and solar plants, with nuclear providing the most reliable baseload power.

Data economy focus

Restarting reactors for AI

Constellation restarts closed reactors and builds new units to supply data centers with reliable, zero-carbon power.

Grid modernization

Power purchase agreements

Constellation signs long-term PPAs with hyperscalers to fund new capacity and upgrades.

Primer